tza3041ahl NXP Semiconductors, tza3041ahl Datasheet - Page 6

• Manufacturer Part Number: tza3041ahl
• Description: Gigabit Ethernet/fibre Channel Laser Drivers
• Manufacturer: NXP Semiconductors

Philips Semiconductors
FUNCTIONAL DESCRIPTION
The TZA3041AHL, TZA3041BHL and TZA3041U laser
drivers accept a 1.2 Gbits/s Non-Return to Zero (NRZ)
input data stream, and generate an output signal with
sufficient current to drive a solid state Fabry Perot (FP) or
Distributed FeedBack (DFB) laser. They also contain dual
loop control circuitry for stabilizing the true laser optical
power levels representing logic 1 and logic 0.
2002 Aug 13
handbook, full pagewidth
handbook, full pagewidth
Gigabit Ethernet/Fibre Channel laser
drivers
DIN, DLOOP
V CC(G)
TZERO
MONIN
TONE
BGAP
GND
GND
GND
Fig.5 DIN/DINQ and DLOOP/DLOOPQ inputs.
1
2
3
4
5
6
7
8
Fig.4 Pin configuration of TZA3041BHL.
100
10 k
TZA3041BHL
GND
6
The input buffers present a high impedance to the data
stream on the differential inputs (pins DIN and DINQ);
see Fig.5. The input signal can be at a CML level of
approximately 200 mV (p-p) below the supply voltage, or
at a PECL level up to 800 mV (p-p). The inputs can be
configured to accept CML signals by connecting pins DIN
and DINQ to V
If PECL compatibility is required, the usual Thevenin
termination can be applied.
MGS910
10 k
TZA3041AHL; TZA3041BHL;
100
V CC(R)
CC(R)
24
23
22
21
20
19
18
17
MBK875
via external 50
DINQ, DLOOPQ
GND
ZERO
ONE
V CC(R)
DLOOPQ
DLOOP
V CC(R)
GND
Product specification
pull-up resistors.
TZA3041U